“Caring passionately about something isn't against nature, and it isn't against human nature. It's what we're here to do.”

“Work is against human nature because it's tiring.”

“The excellence reflex is a natural reaction to fix something that isn't right, or to improve something that could be better. The excellence reflex is rooted in instinct and upbringing, and then constantly honed through awareness, caring and practice.The overarching concern to do the right thing well is something we can't train for. Either it's there or it isn't.”

“The backside of a mountain is a fight against human nature. You have to care as much about yourself on the way down as you did on the way up.”

“The battle we are fighting is not against a particular group. It is against human nature - or at least what it has become.”

“(Referring to the piano's natural shape) Isn't it a shame when those big fat opera singers lean against the pianos and bend them?”